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Diffstat (limited to 'boilerplate/cairo-boilerplate-vg.c')
| -rwxr-xr-x | boilerplate/cairo-boilerplate-vg.c | 363 |
1 files changed, 363 insertions, 0 deletions
diff --git a/boilerplate/cairo-boilerplate-vg.c b/boilerplate/cairo-boilerplate-vg.c new file mode 100755 index 000000000..ee32b3c62 --- /dev/null +++ b/boilerplate/cairo-boilerplate-vg.c @@ -0,0 +1,363 @@ +/* Cairo - a vector graphics library with display and print output + * + * Copyright © 2009 Chris Wilson + * + * This library is free software; you can redistribute it and/or + * modify it either under the terms of the GNU Lesser General Public + * License version 2.1 as published by the Free Software Foundation + * (the "LGPL") or, at your option, under the terms of the Mozilla + * Public License Version 1.1 (the "MPL"). If you do not alter this + * notice, a recipient may use your version of this file under either + * the MPL or the LGPL. + * + * You should have received a copy of the LGPL along with this library + * in the file COPYING-LGPL-2.1; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA + * You should have received a copy of the MPL along with this library + * in the file COPYING-MPL-1.1 + * + * The contents of this file are subject to the Mozilla Public License + * Version 1.1 (the "License"); you may not use this file except in + * compliance with the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY + * OF ANY KIND, either express or implied. See the LGPL or the MPL for + * the specific language governing rights and limitations. + * + * The Original Code is the cairo graphics library. + * + * The Initial Developer of the Original Code is Chris Wilson. + */ + +#include "cairo-boilerplate-private.h" + +#include <cairo-vg.h> + + /* XXX Not sure how to handle library specific context initialization */ +//#define USE_SHIVA +//#define USE_AMANITH + +#if CAIRO_HAS_GLX_FUNCTIONS + +#include <X11/Xlib.h> +#include <GL/glx.h> + +typedef struct _vg_closure { + Display *dpy; + int screen; + Window win; + + GLXContext ctx; + cairo_surface_t *surface; +} vg_closure_glx_t; + +static void +_cairo_boilerplate_vg_cleanup_glx (void *closure) +{ + vg_closure_glx_t *vgc = closure; + +#ifdef USE_AMANITH + vgDestroyContextAM (); +#endif +#ifdef USE_SHIVA + vgDestroyContextSH (); +#endif + + glXDestroyContext (vgc->dpy, vgc->ctx); + XDestroyWindow (vgc->dpy, vgc->win); + XCloseDisplay (vgc->dpy); + free (vgc); +} + +static cairo_surface_t * +_cairo_boilerplate_vg_create_surface_glx (const char *name, + cairo_content_t content, + double width, + double height, + double max_width, + double max_height, + cairo_boilerplate_mode_t mode, + void **closure) +{ + int rgba_attribs[] = { + GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + GLX_ALPHA_SIZE, 1, + GLX_DOUBLEBUFFER, + None + }; + int rgb_attribs[] = { + GLX_RGBA, + GLX_RED_SIZE, 1, + GLX_GREEN_SIZE, 1, + GLX_BLUE_SIZE, 1, + GLX_DOUBLEBUFFER, + None + }; + XVisualInfo *vi; + Display *dpy; + Colormap cmap; + XSetWindowAttributes swa; + cairo_surface_t *surface; + cairo_vg_context_t *context; + vg_closure_glx_t *vgc; + + vgc = malloc (sizeof (vg_closure_glx_t)); + *closure = vgc; + + if (width == 0) + width = 1; + if (height == 0) + height = 1; + + dpy = XOpenDisplay (NULL); + vgc->dpy = dpy; + if (vgc->dpy == NULL) { + fprintf (stderr, "Failed to open display: %s\n", XDisplayName(0)); + free (vgc); + return NULL; + } + + if (content == CAIRO_CONTENT_COLOR) + vi = glXChooseVisual (dpy, DefaultScreen (dpy), rgb_attribs); + else + vi = glXChooseVisual (dpy, DefaultScreen (dpy), rgba_attribs); + + if (vi == NULL) { + fprintf (stderr, "Failed to create RGB, double-buffered visual\n"); + XCloseDisplay (dpy); + free (vgc); + return NULL; + } + + vgc->ctx = glXCreateContext (dpy, vi, NULL, True); + cmap = XCreateColormap (dpy, + RootWindow (dpy, vi->screen), + vi->visual, + AllocNone); + swa.colormap = cmap; + swa.border_pixel = 0; + vgc->win = XCreateWindow (dpy, RootWindow (dpy, vi->screen), + -1, -1, 1, 1, 0, + vi->depth, + InputOutput, + vi->visual, + CWBorderPixel | CWColormap, &swa); + XFreeColormap (dpy, cmap); + XFree (vi); + + XMapWindow (dpy, vgc->win); + + /* we need an active context to initialise VG */ + glXMakeContextCurrent (dpy, vgc->win, vgc->win, vgc->ctx); + +#ifdef USE_AMANITH + vgInitContextAM (width, height, VG_FALSE, VG_TRUE); +#endif +#ifdef USE_SHIVA + vgCreateContextSH (width, height); +#endif + + context = cairo_vg_context_create_for_glx (dpy, vgc->ctx); + vgc->surface = cairo_vg_surface_create (context, content, width, height); + cairo_vg_context_destroy (context); + + surface = vgc->surface; + if (cairo_surface_status (surface)) + _cairo_boilerplate_vg_cleanup_glx (vgc); + + return surface; +} +#endif + +#if CAIRO_HAS_EGL_FUNCTIONS +typedef struct _vg_closure_egl { + EGLDisplay *dpy; + EGLContext *ctx; + EGLSurface *dummy; +} vg_closure_egl_t; + +static void +_cairo_boilerplate_vg_cleanup_egl (void *closure) +{ + vg_closure_egl_t *vgc = closure; + +#ifdef USE_AMANITH + vgDestroyContextAM (); +#endif +#ifdef USE_SHIVA + vgDestroyContextSH (); +#endif + + eglDestroyContext (vgc->dpy, vgc->ctx); + eglDestroySurface (vgc->dpy, vgc->dummy); + eglTerminate (vgc->dpy); + free (vgc); +} + +static cairo_surface_t * +_cairo_boilerplate_vg_create_surface_egl (const char *name, + cairo_content_t content, + double width, + double height, + double max_width, + double max_height, + cairo_boilerplate_mode_t mode, + void **closure) +{ + int rgba_attribs[] = { + EGL_RED_SIZE, 8, + EGL_GREEN_SIZE, 8, + EGL_BLUE_SIZE, 8, + EGL_ALPHA_SIZE, 8, + EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, + EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT, + None + }; + int rgb_attribs[] = { + EGL_RED_SIZE, 8, + EGL_GREEN_SIZE, 8, + EGL_BLUE_SIZE, 8, + EGL_ALPHA_SIZE, 8, + EGL_VG_ALPHA_FORMAT, EGL_VG_ALPHA_FORMAT_PRE_BIT, + EGL_SURFACE_TYPE, EGL_PBUFFER_BIT, + EGL_RENDERABLE_TYPE, EGL_OPENVG_BIT, + None + }; + int dummy_attribs[] = { + EGL_WIDTH, 8, EGL_HEIGHT, 8, + EGL_NONE + }; + EGLDisplay *dpy; + int major, minor; + EGLConfig config; + int num_configs; + EGLContext *egl_context; + EGLSurface *dummy; + cairo_vg_context_t *context; + cairo_surface_t *surface; + vg_closure_egl_t *vgc; + + dpy = eglGetDisplay (EGL_DEFAULT_DISPLAY); + + if (! eglInitialize (dpy, &major, &minor)) + return NULL; + + eglBindAPI (EGL_OPENVG_API); + + if (! eglChooseConfig (dpy, + content == CAIRO_CONTENT_COLOR_ALPHA ? + rgba_attribs : rgb_attribs, + &config, 1, &num_configs) || + num_configs != 1) + { + return NULL; + } + + egl_context = eglCreateContext (dpy, config, NULL, NULL); + if (egl_context == NULL) + return NULL; + + /* Create a dummy surface in order to enable a context to initialise VG */ + dummy = eglCreatePbufferSurface (dpy, config, dummy_attribs); + if (dummy == NULL) + return NULL; + if (! eglMakeCurrent (dpy, dummy, dummy, egl_context)) + return NULL; + +#ifdef USE_AMANITH + vgInitContextAM (width, height, VG_FALSE, VG_TRUE); +#endif +#ifdef USE_SHIVA + vgCreateContextSH (width, height); +#endif + + vgc = xmalloc (sizeof (vg_closure_egl_t)); + vgc->dpy = dpy; + vgc->ctx = egl_context; + vgc->dummy = dummy; + *closure = vgc; + + context = cairo_vg_context_create_for_egl (vgc->dpy, vgc->ctx); + surface = cairo_vg_surface_create (context, content, width, height); + cairo_vg_context_destroy (context); + + if (cairo_surface_status (surface)) + _cairo_boilerplate_vg_cleanup_egl (vgc); + + return surface; +} +#endif + +static void +_cairo_boilerplate_vg_synchronize (void *closure) +{ + vgFinish (); +} + +static const cairo_boilerplate_target_t targets[] = { +#if CAIRO_HAS_GLX_FUNCTIONS + { + "vg-glx", "vg", NULL, NULL, + CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR_ALPHA, 1, + "cairo_vg_context_create_for_glx", + _cairo_boilerplate_vg_create_surface_glx, + cairo_surface_create_similar, + NULL, NULL, + _cairo_boilerplate_get_image_surface, + cairo_surface_write_to_png, + _cairo_boilerplate_vg_cleanup_glx, + _cairo_boilerplate_vg_synchronize, + NULL, + TRUE, FALSE, FALSE + }, + { + "vg-glx", "vg", NULL, NULL, + CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR, 1, + "cairo_vg_context_create_for_glx", + _cairo_boilerplate_vg_create_surface_glx, + cairo_surface_create_similar, + NULL, NULL, + _cairo_boilerplate_get_image_surface, + cairo_surface_write_to_png, + _cairo_boilerplate_vg_cleanup_glx, + _cairo_boilerplate_vg_synchronize, + NULL, + FALSE, FALSE, FALSE + }, +#endif +#if CAIRO_HAS_EGL_FUNCTIONS + { + "vg-egl", "vg", NULL, NULL, + CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR_ALPHA, 1, + "cairo_vg_context_create_for_egl", + _cairo_boilerplate_vg_create_surface_egl, + cairo_surface_create_similar, + NULL, NULL, + _cairo_boilerplate_get_image_surface, + cairo_surface_write_to_png, + _cairo_boilerplate_vg_cleanup_egl, + _cairo_boilerplate_vg_synchronize, + NULL, + TRUE, FALSE, FALSE + }, + { + "vg-egl", "vg", NULL, NULL, + CAIRO_SURFACE_TYPE_VG, CAIRO_CONTENT_COLOR, 1, + "cairo_vg_context_create_for_egl", + _cairo_boilerplate_vg_create_surface_egl, + cairo_surface_create_similar, + NULL, NULL, + _cairo_boilerplate_get_image_surface, + cairo_surface_write_to_png, + _cairo_boilerplate_vg_cleanup_egl, + _cairo_boilerplate_vg_synchronize, + NULL, + FALSE, FALSE, FALSE + }, +#endif +}; +CAIRO_BOILERPLATE (vg, targets) |